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Finding the Fourth Proportional to 243,369.30, 335,846.07 and 135,940.80

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Solution

The fourth proportional to 243,369.30, 335,846.07 and 135,940.80 is: 187,596.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,369.30 : 335,846.07 = 135,940.80 : x
  2. Step 2: Convert to fraction form
    243,369.30/335,846.07 = 135,940.80/x
  3. Step 3: Cross multiply
    243,369.30x = 335,846.07 × 135,940.80
  4. Step 4: Simplify right side
    243,369.30x = 45,655,183,432.66
  5. Step 5: Solve for x
    x = 45,655,183,432.66/243,369.30
  6. Step 6: Final answer
    x = 187,596.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.